Galeria com Páginação

paginated-gallery.php

<?php
/*
Plugin Name: Galeria com paginação
Plugin URI: http://www.phil-barker.com/
Description: Adds pages to the wordpress gallery
Version: 0.2
Author: Claudio Sanches
Author URI: http://www.claudiosmweb.com/
License: GPL2

Plugin originalmente escrito por Phil Barker (http://www.phil-barker.com/)

*/

function gallery_with_pagination($attr) {
	global $post;

	static $instance = 0;
	$instance++;

	extract( shortcode_atts( array(
		'qty' => '5'
	), $attr ) );

	$imagesPerPage = $qty;

	// Define some default options
	$options = array(
		'order'=> 'ASC',
		'orderby'=> 'menu_order ID',
		'itemtag'=> 'dl',
		'icontag'=> 'dt',
		'captiontag'=> 'dd',
		'columns'=> 3,
		'size'=> 'thumbnail',
		'perpage'=> $imagesPerPage,
		'link'=>'attachment',
		'show_edit_links'=>'Y',
		'use_shortcode'=>'gallery',
		'exclude'=>''
	);

	// We're trusting author input, so let's at least make sure it looks like a valid orderby statement
	if ( isset( $attr['orderby'] ) ) {
		$attr['orderby'] = sanitize_sql_orderby( $attr['orderby'] );
		if ( !$attr['orderby'] )
			unset( $attr['orderby'] );
	}

	// Overwrite the defaults with any options passed in
	if (is_array($attr)) $options = array_merge($options, $attr);

	// Start by getting the attachments
	$attachments = get_children(array(
		'post_parent'=> $post->ID,
		'post_status'=>'inherit',
		'post_type'=> 'attachment',
		'post_mime_type'=>'image',
		'order'=> $options['order'],
		'orderby'=> $options['orderby'],
		'exclude'=> $options['exclude']
	));

	// If we don't have any attachments - output nothing
	if ( empty($attachments) ) return '';

	// Output feed if requested
	if ( is_feed() ) {
		$output = "\n";

		foreach ( $attachments as $id => $attachment )
			$output .= wp_get_attachment_link($id, $options['size'], true) . "\n";
		return $output;
	}

	// Standard post output

	// Work out how many pages we need and what page we are currently on
	$imageCount = count($attachments);
	$pageCount = ceil($imageCount / $imagesPerPage);

	$currentPage = intval($_GET['galleryPage']);
	if ( empty($currentPage) || $currentPage<=0 ) $currentPage=1;

	$maxImage = $currentPage * $imagesPerPage;
	$minImage = ($currentPage-1) * $imagesPerPage;


	if ($pageCount > 1)
	{
		$page_link= get_permalink();
		$page_link_perma= true;
		if ( strpos($page_link, '?')!==false )
			$page_link_perma= false;

		$gplist= '<div class="gallery_pages_list">'.__('Pages').'&nbsp; ';
		for ( $j=1; $j<= $pageCount; $j++)
		{
			if ( $j==$currentPage )
				$gplist .= '<strong class="current_gallery_page_num"> '.$j.' </strong>&nbsp;';
			else
				$gplist .= '<a href="'.$page_link. ( ($page_link_perma?'?':'&amp;') ). 'galleryPage='.$j.'">'.$j.'</a>&nbsp; ';
		}

		$gplist .= '</div>';
	}
	else
		$gplist= '';

	$itemtag = tag_escape($options['itemtag']);
	$captiontag = tag_escape($options['captiontag']);
	$columns = intval($options['columns']);
	$itemwidth = $options['columns'] > 0 ? floor(100/$options['columns']) : 100;
	$float = is_rtl() ? 'right' : 'left';
	$icontag = $options['icontag'];
	$id = isset($options['id']) ? $options['id'] : '';
	$size = $options['size'];

	$selector = "gallery-{$instance}";

	$gallery_style = $gallery_div = '';
	if ( apply_filters( 'use_default_gallery_style', true ) )
		$gallery_style = "
		<style type='text/css'>
			#{$selector} {
				margin: auto;
			}
			#{$selector} .gallery-item {
				float: {$float};
				margin-top: 10px;
				text-align: center;
				width: {$itemwidth}%;
			}
			#{$selector} img {
				border: 2px solid #cfcfcf;
			}
			#{$selector} .gallery-caption {
				margin-left: 0;
			}
		</style>
		<!-- see gallery_shortcode() in wp-includes/media.php -->";
	$size_class = sanitize_html_class( $size );
	$gallery_div = "<div id='$selector' class='gallery galleryid-{$id} gallery-columns-{$columns} gallery-size-{$size_class}'>";
	$output = apply_filters( 'gallery_style', $gallery_style . "\n\t\t" . $gallery_div );

	$i = 0;
	$k = 0;
	foreach ( $attachments as $id => $attachment ) {
		if ($k >= $minImage && $k < $maxImage) {
			$link = isset($options['link']) && 'file' == $options['link'] ? wp_get_attachment_link($id, $size, false, false) : wp_get_attachment_link($id, $size, true, false);

			$output .= "<{$itemtag} class='gallery-item'>";
			$output .= "
				<{$icontag} class='gallery-icon'>
					$link
				</{$icontag}>";
			if ( $captiontag && trim($attachment->post_excerpt) ) {
				$output .= "
					<{$captiontag} class='wp-caption-text gallery-caption'>
					" . wptexturize($attachment->post_excerpt) . "
					</{$captiontag}>";
			}
			$output .= "</{$itemtag}>";
			if ( $columns > 0 && ++$i % $columns == 0 )
				$output .= '<br style="clear: both" />';
		}
		$k++;
	}
	$output .= "\n<br style='clear: both;' />$gplist\n</div>\n";

	return $output;

	// If we've got this far then we must have some attachments to play with!
	//return 'Gallery Here - Page '. $currentPage. ' de '. $pageCount;
}

add_shortcode('page-gallery', 'gallery_with_pagination');

?>